I think a lot of the problem comes from the fact that Tanky-DPS/"Bruiser" types are just so **** generic. Gap closer + steroid + herp derp if I close the distance on anything but a tank it dies. I personally detest (yes, detest!) bruiser types, which limits the game's appeal to me in many ways since bruisers are so strong right now. (How about kicking Darius, Jax, and the new Xin in the balance-balls for me, eh?)
Anyway, I agree: Not all humans are the same. Some humans I love. Annie, Fiora, Graves, and many more are enjoyable and compelling! It's just the "DAUGHHHHH I HAVE A BIG WEPON AND I GO TOP LANE 4 WIN" junk that really gets up my nose.